Tribological behavior of NiTi alloy against 52100 steel and WC at elevated temperatures

Abedini, M.; Ghasemi, H.M.; Nili‐Ahmadabadi, Mahmoud

doi:10.1016/j.matchar.2010.03.017

Cited by 41 publications

(16 citation statements)

References 19 publications

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“…For the hard materials such as intermetallic compounds and TiN, the load is an important factor in the variation of the antifriction and wear resistance. A similar result is observed in other literatures [22,23]. At the same time, as listed in Table 1, the average friction coefficient and wear rate of the Ni-Ti coating before and after the heat treatment increase with increasing normal load, which is rational, since a larger normal load usually refers to more severe adhesion, scuffing, and cracking of the coatings, which is in accordance with Archard's law [24].…”

Section: Tribological Properties Of Ni-ti Coatingssupporting

confidence: 88%

“…It is seen that a great amount of wear debris was embedded in the worn steel ball surface (see Figure 5(a)), while a small amount of Ni-Ti intermetallic compounds and TiN transferred from the coating was detected on the rubbing surface of the steel ball (see Figures 5(b), 5(c), and 5(d)), similar to what has been reported by Chang et al [25]. Subsequently, it could be rational to suppose that the Ni-Ti coating after the heat treatment possesses better tribological properties in the presence of hard Ni-Ti intermetallic compounds and TiN with good wear resistance and somewhat solid lubricity [22,23].…”

Section: Tribological Properties Of Ni-ti Coatingssupporting

confidence: 85%

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The Tribological Property and Microstructure of Ni-Ti Coating Prepared by Electrodeposition and Heat Treatment

Sun

Wang

et al. 2016

Advances in Materials Science and Engineering

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Ni-Ti coatings were fabricated by the electrodeposition in a Ni plating bath containing Ti power and heat treatment in nitrogen atmosphere. The surface morphology and microstructure of the Ni-Ti coating before and after heat treatment were analyzed by means of scanning electron microscopy and X-ray diffraction. The friction and wear behaviors of two different coatings were evaluated on a ball-on-disk UMT-2MT test rig. It was found that the phase structure of Ni-Ti coating heated in nitrogen was much different from that of the as-deposited Ni-Ti coating. Namely, the new intermetallic compounds, including Ni3Ti, NiTi, and NiTi2, and TiN were detected in the coating after heat treatment by the XRD analysis and contributed to greatly increasing the hardness and tribological property of the Ni-Ti coating, owing to the strengthening effect of the hard intermetallic compounds and TiN phase. At the same time, a small amount of intermetallic compounds and TiN was transferred from the composite coating to the rubbing surface of the counterpart steel ball during the sliding, which also contributed to decreasing the friction coefficient and increasing the wear resistance.

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Section: Tribological Properties Of Ni-ti Coatingssupporting

confidence: 88%

Section: Tribological Properties Of Ni-ti Coatingssupporting

confidence: 85%

The Tribological Property and Microstructure of Ni-Ti Coating Prepared by Electrodeposition and Heat Treatment

Sun

Wang

et al. 2016

Advances in Materials Science and Engineering

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“…Several tribological experiments have been performed on NiTi alloy in a dry environment [39,71,72,74], with the focus on the wear performances of austenitic and martensitic microstructures [39,71,72]. It has been reported that, in dry tribological conditions, the martensitic state is dominated by plastic deformation and the austenitic state by fatigue wear [39].…”

Section: Tribocorrosion and Wear Properties Of Niti Alloymentioning

confidence: 99%

A Critical Appraisal of the Use and Properties of Nickel–Titanium Dental Alloys

Močnik

Kosec

2021

Materials

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Nickel–titanium (NiTi) archwires are used in dentistry for orthodontic treatment. NiTi alloys have favourable mechanical characteristics, such as superelasticity and shape memory, and are also known as a corrosion-resistant alloy. In specific cases, an archwire could be attacked by certain types of corrosion or wear degradation, which can cause the leaching of metal ions and a hypersensitive response due to increased concentrations of Ni in the human body. A systematic search of the literature retrieved 102 relevant studies. The review paper focuses on three main fields: (i) electrochemical properties of NiTi wires and the effect of different environments on the properties of NiTi wires (fluoride and low pH); (ii) tribocorrosion, a combination of chemical and mechanical wear of the material, and (iii) the biocompatibility of NiTi alloy and its subsequent effect on the human body. The review showed that corrosion properties are affected by microstructure, pH of saliva and the presence of fluorides. A high variation in published results should be, therefore, interpreted with care. The release of nickel ions was assessed using the same unit, showing that the vast majority of metal ions were released in the first few days of exposure, then a stable, steady state was reached. In tribocorrosion studies, the increased concentrations of Ni ions were reported.

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“…Near the equiatomic concentration is well known for its shape memory effect (SME). Due to its unique physical and mechanical properties at room temperature ductility, damping effect, corrosion resistance and biocompatibility, TiNi shape memory alloys can be used for biomedical applications [5,6]. Porous NiTi-shape memory alloy has, for example, been considered as a promising biomedical material for orthopedics and bone implant surgeries in recent years [7].…”

Section: Introductionmentioning

confidence: 99%

Single Walled Carbon Nanotubes Reinforced Intermetallic TiNi Matrix Nanocomposites by Spark Plasma Sintering

Bendjemil¹,

Bougdira²,

Zhang³

et al. 2015

cme

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We report the processing of single walled carbon nanotubes (SWCNTs) reinforced TiNi intermetallic matrix nanocomposites from Ti/Ni and SWCNTs powders using spark plasma sintering (SPS)at temperatures from 1000°C to 1200°C. The SWCNTs are doped into the TiNi matrix from 0.0 to 1.0 wt%. The effect of SWCNTs reinforcement contents on the relative density, phases, microstructure and microhardness of TiNi intermetallics matrix andCNTs/TiC/TiNi nanocomposites are studied. The experimental results show that the TiNi sintered at T= 1200°C reinforced with 0.8 wt% SWCNTs has the highest Vicker's microhardness and relative density, which were HV 5.29 GPa and 96%, respectively. That can be explained by the precipitation of TiC and Ti 2 Ni in the matrix.This study explores the possibility of developing novel TiNi matrix nanocomposites with shape memory effect and biocompatibility.

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Tribological behavior of NiTi alloy against 52100 steel and WC at elevated temperatures

Cited by 41 publications

References 19 publications

The Tribological Property and Microstructure of Ni-Ti Coating Prepared by Electrodeposition and Heat Treatment

The Tribological Property and Microstructure of Ni-Ti Coating Prepared by Electrodeposition and Heat Treatment

A Critical Appraisal of the Use and Properties of Nickel–Titanium Dental Alloys

Single Walled Carbon Nanotubes Reinforced Intermetallic TiNi Matrix Nanocomposites by Spark Plasma Sintering

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